This is based on an Amex Offer: spend $50 at Martha Stewart Wine and get $40 back. I have 2 cards that have this offer so I used both of them.
1. Groupon has 6 bottles of wine+$50 off $75 voucher for 49.99, and if you use coupon SUNNY20
you can get that down to 39.99.
2. Once you receive the groupon, follow the instruction to redeem the code. On the official website it will ask you whether you want to upgrade to 12 bottles and a $75 off $100 voucher for another $49.99. I'm from California so they charged tax and brought the total to about $57, which triggered the first $40 back.
3. Then you can use the $75 voucher on whatever and however many bottles of wine you want from the website, as long as the total is over $50 after shipping, tax and voucher discount. I bought a 4 bottle red wine case, 2 sparklings and 1 red, ending up charging a little over $50 to my card, triggering the second $40 back.
Total paid: 40(groupon)+57(first order)+50(second order)-80(amex cashback) = 67 for a total of 19 bottles. They might not be the best wines but at less than $4 a bottle I'm not complaining.
YMMV because offer triggering depends on your state and whether you have the Amex Offer. If both apply to you then you can definitely enjoy this deal.
1. SUNNY20 shouldn't be YMMV. It's an officialgroupon coupon I saw in a banner. It expires on 6/28.
2. As of which states charge tax, according to SDer Just_one's comment:
Here [marthastewartwine.com]'s a list of the states Martha Stewart Wine ships to. It's still highly recommended that you check with the website before purchasing the groupon.
The way online wine sales work is that ALL orders must be shipped by a licensed distributor within the buyer's home state. So you will be charged sales tax.
3. If you don't want 19 bottles of wine, the most cost effective way is to order only 2 or 3 bottles with each Amex Offer. The order total (including shipping and tax) needs to exceed $50. Each bottle should cost $4~6 after Amex Offer, which is still a decent deal.